Consider that the zeroes of a function y=f(x) are the values of 'x' for which the function becomes zero.
These zeroes can be obtained by solving the equation,
Since the values of the function are plotted on the vertical axis, it can be claimed that the zeroes are the x-coordinate of points at which the y-coordinate becomes zero.
Now, observe the graph carefully.
There are two such points at which the y-coordinate becomes zero. These points are -1 and 3.
So, the zeroes of the function are -1 and 3.
Amongst the